Messages

1

General / Re: Update CircleShape color in other thread

« on: May 25, 2017, 03:48:49 am »

I reduced the code to just basics. The app basically draw a sprite and a circle shape showing the state of a usb card-reader connected to the pc. When the card-reader is plugged in changes the circleshape color, then it do some stuff, like giving format to the card-reader, copy some files to,..., and then finally do a safe-remove.

every state is coded with a color and it handles as max usb ports as u have to plug in card-readers, so the second thread is intended to Format drive, copy files,..., safe-remove, without stopping the main thread who is listening windows events, drawing, and creating threads for every card-reader.

if i just call a function i will be calling a function from the second thread, so i suppose is the same.

what i'm doing is creating a win32 app, starting a windows, subscribing it to the WM_DEVICECHANGE windows event and hiding it. What i discover from unhide that window is when the win32 window is onfocus or active i don't have the problem to move the mouse or press a key to update the rendering.

why it happens idk. That is why i asked here https://en.sfml-dev.org/forums/index.php?topic=22016.0 if there is a way to subscribe the render window to the WM_DEVICECHANGE windows event directly with out creating the Win32 window.

or can i create a sf::view or a sf::renderwindow inside the win32 window?

Thanks anyway.

2

General / Register sf::RenderWindow to listen for WM_DEVICECHANGE Windows event

« on: May 25, 2017, 01:25:56 am »

Is there a way to do that?

I know how to do it in a win32 application.

Any help will be appreciated.

thanks!

3

General / Re: Update CircleShape color in other thread

« on: May 25, 2017, 01:15:06 am »

This is the Main Loop:

void Manager::Run()
{
while (m_window->m_renderWindow.isOpen())
    {
        sf::Event evnt;
        while (m_window->m_renderWindow.pollEvent(evnt));
        {
            if (evnt.type == sf::Event::Closed)
                m_window->CloseWindowes();
        }

        m_window->MessagePump();
        ProcessMessages();
        Update();
        Draw();
    }
}

This is the Draw funtion:

void Manager::Draw()
{
    m_window->m_renderWindow.clear(sf::Color::Black);
    //Drive container.second only has a pointer to class EgClass*
    DriveContainer::iterator itr = m_DriveContainer.begin();
    for (; itr != m_DriveContainer.end(); )
    {
        itr->second->Draw(m_window->m_renderWindow);
        ++itr;
    }

    m_window->m_renderWindow.display();
}

this is the draw function of the instance:

void EgClass::Draw(sf::RenderWindow& renderWindow)
{
    renderWindow.draw(m_spriteSD);
    renderWindow.draw(m_circleShape);
    renderWindow.draw(m_text);
}

and this is a thread launched when i create the instance

void EgClass::Run()
{
    m_circleShape.setFillColor(sf::Color::Blue);

    while (m_state != L"Done")
    {
        m_state = L"Done";

        sf::sleep(sf::seconds(15));
    }
    m_circleShape.setFillColor(sf::Color::Green);
}

4

General / Update CircleShape color in other thread

« on: May 25, 2017, 12:58:07 am »

Hello guys i'm trying to do what the title says, i'm not doing any multi-threading rendering, its just a thread that updates the color of a CircleShape, it works fine excepts that i only see the new color when i move the mouse or press any key, it means on any event.

i cant find something similar on the forum or google.

i appreciate any clue about what is happening.

thanks!